Evil from Conviction

"Men never do evil so completely and cheerfully as when they do it from religious conviction."

-Blaise Pascal (Pensees, 1670)

"Jamais on ne fait le mal si pleinement et si gaiement que quand on le fait par conscience."

lit: Men never do evil so completely and cheerfully as when they do it conscientiously.

Variant: Men never do evil so completely and cheerfully as when they do it from religious conviction (trans. W.F. Trotter)

Blaise Pascal, Pensées (# 894 or 895, depending on differing editions).

http://en.wikiquote.org/wiki/Evil

Author

Profession: Philosopher

Nationality: French

Born: June 19, 1623

Died: August 19, 1662